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From: Andrea Righi <righi.andrea@gmail.com>
To: Satoshi UCHIDA <s-uchida@ap.jp.nec.com>
Cc: "'Ryo Tsuruta'" <ryov@valinux.co.jp>,
	axboe@kernel.dk, vtaras@openvz.org,
	containers@lists.linux-foundation.org,
	tom-sugawara@ap.jp.nec.com, linux-kernel@vger.kernel.org
Subject: Re: [RFC][v2][patch 0/12][CFQ-cgroup]Yet another I/O bandwidth controlling subsystem for CGroups based on CFQ
Date: Fri, 30 May 2008 12:37:25 +0200 (MEST)	[thread overview]
Message-ID: <483FD8E5.2080600@gmail.com> (raw)
In-Reply-To: <004f01c8bfed$640fa380$2c2eea80$@jp.nec.com>

Satoshi UCHIDA wrote:
> Hi, Tsuruta-san.
> 
>> I'm looking forward to your report.

Hi Satoshi,

I'm testing your patch agains latest Linus git and I've got the
following bug. It can be easily reproduced creating a cgroup, switching
the i/o scheduler from cfq to any other and switch back to cfq again.

-Andrea

BUG: unable to handle kernel paging request at ffffffeb
IP: [<c0212dc6>] cfq_cgroup_sibling_tree_add+0x36/0x90
Oops: 0000 [#1] SMP
Modules linked in: i2c_piix4 ne2k_pci 8390 i2c_core

Pid: 3543, comm: bash Not tainted (2.6.26-rc4 #1)
EIP: 0060:[<c0212dc6>] EFLAGS: 00010286 CPU: 0
EIP is at cfq_cgroup_sibling_tree_add+0x36/0x90
EAX: 00000003 EBX: c7704c90 ECX: ffffffff EDX: c7102180
ESI: c7102240 EDI: c7704c80 EBP: c7afbe94 ESP: c7afbe80
 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process bash (pid: 3543, ti=c7afa000 task=c7aeda00 task.ti=c7afa000)
Stack: c7704c90 c71022d0 c7ace078 c7704c80 c71020c0 c7afbea8 c021363c
c7ace078
       c7803460 c71020c0 c7afbebc c021360a c7102184 c71020c0 c7102180
c7afbee4
       c02134e0 00000000 c7102184 c72b8ab0 00000001 c7102140 c72b8ab0
c04b8ac0
Call Trace:
 [<c021363c>] ? cfq_cgroup_init_cfq_data+0x7c/0x80
 [<c021360a>] ? cfq_cgroup_init_cfq_data+0x4a/0x80
 [<c02134e0>] ? __cfq_cgroup_init_queue+0x100/0x1e0
 [<c021097b>] ? cfq_init_queue+0xb/0x10
 [<c0204ff8>] ? elevator_init_queue+0x8/0x10
 [<c0205cd0>] ? elv_iosched_store+0x80/0x2b0
 [<c0209379>] ? queue_attr_store+0x49/0x70
 [<c01c488b>] ? sysfs_write_file+0xbb/0x110
 [<c0186276>] ? vfs_write+0x96/0x160
 [<c01c47d0>] ? sysfs_write_file+0x0/0x110
 [<c018696d>] ? sys_write+0x3d/0x70
 [<c0104267>] ? sysenter_past_esp+0x78/0xd1
 =======================
Code: ec 08 8b 82 90 00 00 00 83 e0 fc 89 45 f0 8d 82 90 00 00 00 39 45
f0 75 5f
8d 47 10 89 45 ec 89 c3 31 c0 eb 11 8b 56 7c 8d 41 04 <3b> 51 ec 8d 59
08 0f 43
d8 89 c8 8b 0b 85 c9 75 e9 89 86 90 00
EIP: [<c0212dc6>] cfq_cgroup_sibling_tree_add+0x36/0x90 SS:ESP
0068:c7afbe80
---[ end trace 9701f4859bb53d27 ]---

  reply	other threads:[~2008-05-30 10:37 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-01  9:22 [RFC][patch 0/11][CFQ-cgroup]Yet " Satoshi UCHIDA
2008-04-01  9:27 ` [RFC][patch 1/11][CFQ-cgroup] Add Configuration Satoshi UCHIDA
2008-04-01  9:30 ` [RFC][patch 2/11][CFQ-cgroup] Move header file Satoshi UCHIDA
2008-04-01  9:32 ` [RFC][patch 3/11][CFQ-cgroup] Introduce cgroup subsystem Satoshi UCHIDA
2008-04-02 22:41   ` Paul Menage
2008-04-03  2:31     ` Satoshi UCHIDA
2008-04-03  2:39       ` Li Zefan
2008-04-03 15:31       ` Paul Menage
2008-04-03  7:09     ` [RFC][v2][patch 0/12][CFQ-cgroup]Yet another I/O bandwidth controlling subsystem for CGroups based on CFQ Satoshi UCHIDA
2008-04-03  7:11       ` [PATCH] [RFC][patch 1/12][CFQ-cgroup] Add Configuration Satoshi UCHIDA
2008-04-03  7:12       ` [RFC][patch 2/11][CFQ-cgroup] Move header file Satoshi UCHIDA
2008-04-03  7:12       ` [RFC][patch 3/12][CFQ-cgroup] Introduce cgroup subsystem Satoshi UCHIDA
2008-04-03  7:13       ` [PATCH] [RFC][patch 4/12][CFQ-cgroup] Add ioprio entry Satoshi UCHIDA
2008-04-03  7:14       ` [RFC][patch 5/12][CFQ-cgroup] Create cfq driver unique data Satoshi UCHIDA
2008-04-03  7:14       ` [RFC][patch 6/12][CFQ-cgroup] Add cfq optional operation framework Satoshi UCHIDA
2008-04-03  7:15       ` [RFC][patch 7/12][CFQ-cgroup] Add new control layer over traditional control layer Satoshi UCHIDA
2008-04-03  7:15       ` [RFC][patch 8/12][CFQ-cgroup] Control cfq_data per driver Satoshi UCHIDA
2008-04-03  7:16       ` [RFC][patch 9/12][CFQ-cgroup] Control cfq_data per cgroup Satoshi UCHIDA
2008-04-03  7:16       ` [PATCH] [RFC][patch 10/12][CFQ-cgroup] Search cfq_data when not connected Satoshi UCHIDA
2008-04-03  7:17       ` [RFC][patch 11/12][CFQ-cgroup] Control service tree: Main functions Satoshi UCHIDA
2008-04-03  7:18       ` [RFC][patch 12/12][CFQ-cgroup] entry/remove active cfq_data Satoshi UCHIDA
2008-04-25  9:54       ` [RFC][v2][patch 0/12][CFQ-cgroup]Yet another I/O bandwidth controlling subsystem for CGroups based on CFQ Ryo Tsuruta
2008-04-25 21:37         ` [Devel] " Florian Westphal
2008-04-29  0:44           ` Ryo Tsuruta
2008-05-09 10:17         ` Satoshi UCHIDA
2008-05-12  3:10           ` Ryo Tsuruta
2008-05-12 15:33             ` Ryo Tsuruta
2008-05-22 13:04               ` Ryo Tsuruta
2008-05-23  2:53                 ` Satoshi UCHIDA
2008-05-26  2:46                   ` Ryo Tsuruta
2008-05-27 11:32                     ` Satoshi UCHIDA
2008-05-30 10:37                       ` Andrea Righi [this message]
2008-06-18  9:48                         ` Satoshi UCHIDA
2008-06-18 22:33                           ` Andrea Righi
2008-06-22 17:04                           ` Andrea Righi
2008-06-03  8:15                       ` Ryo Tsuruta
2008-06-26  4:49                         ` Satoshi UCHIDA
2008-04-01  9:33 ` [RFC][patch 4/11][CFQ-cgroup] Create cfq driver unique data Satoshi UCHIDA
2008-04-01  9:35 ` [RFC][patch 5/11][CFQ-cgroup] Add cfq optional operation framework Satoshi UCHIDA
2008-04-01  9:36 ` [RFC][patch 6/11][CFQ-cgroup] Add new control layer over traditional control layer Satoshi UCHIDA
2008-04-01  9:37 ` [RFC][patch 7/11][CFQ-cgroup] Control cfq_data per driver Satoshi UCHIDA
2008-04-01  9:38 ` [RFC][patch 8/11][CFQ-cgroup] Control cfq_data per cgroup Satoshi UCHIDA
2008-04-03 15:35   ` Paul Menage
2008-04-04  6:20     ` Satoshi UCHIDA
2008-04-04  9:00       ` Paul Menage
2008-04-04  9:46         ` Satoshi UCHIDA
2008-04-01  9:40 ` [RFC][patch 9/11][CFQ-cgroup] Search cfq_data when not connected Satoshi UCHIDA
2008-04-01  9:41 ` [RFC][patch 10/11][CFQ-cgroup] Control service tree: Main functions Satoshi UCHIDA
2008-04-01  9:42 ` [RFC][patch 11/11][CFQ-cgroup] entry/remove active cfq_data Satoshi UCHIDA

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